HARDtalk - David Frum, Republican writer and commentator

The Republican party is on course to make big gains in the upcoming US Congressional elections. But what kind of Republican party is it? On the campaign trail much noise and energy is being generated by a band of conservative insurgents who appear out of step with their own party leadership. Stephen Sackur talks to David Frum, a former speech writer for President George W Bush, who is now engaged in the struggle to define the future of conservatism.